21086500

素因数分解:

$2^2\times 5^3\times {\mathrm{181}}^1\times {\mathrm{233}}^1$

素因数の和:433

約数の個数: 48

約数和(自身を含む): 46506096

約数和(自身を除く): 25419596

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 181, 233, 250, 362, 466, 500, 724, 905, 932, 1165, 1810, 2330, 3620, 4525, 4660, 5825, 9050, 11650, 18100, 22625, 23300, 29125, 42173, 45250, 58250, 84346, 90500, 116500, 168692, 210865, 421730, 843460, 1054325, 2108650, 4217300, 5271625, 10543250, 21086500]

約数ペア:

[(1, 21086500), (2, 10543250), (4, 5271625), (5, 4217300), (10, 2108650), (20, 1054325), (25, 843460), (50, 421730), (100, 210865), (125, 168692), (181, 116500), (233, 90500), (250, 84346), (362, 58250), (466, 45250), (500, 42173), (724, 29125), (905, 23300), (932, 22625), (1165, 18100), (1810, 11650), (2330, 9050), (3620, 5825), (4525, 4660)]